Reference of v2 arc alloc

arguments	description	optional
time	time sec	YES
clear	pre-clear the friend list when set true	YES

Allocate an temporarily access token for persistent querying.
Token will be recycled when time limit exceed.
The default time limit is 30 sec.

Return data

{
    "status": 0,
    "content": {
        "access_token": "67c1e625a3afde07cc1cbf46e3a63a04",
        "valid_time": 30
    }
}

Error status

status	description
0	everything is OK
-1	invalid time
-2	allocate an arc account failed
-233	unknown error occurred